X.509 Certificate

nouncandidate·updated May 9, 2026

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The X.509 public-key certificate or the X.509 attribute certificate, as defined by the ISO/ITU-T X.509 standard. Most commonly (including in this document), an X.509 certificate refers to the X.509 public-key certificate.

MWE

Classifications

per-axis with provenance

Entity Type

Credential90%rule-basedr:entity.credential.cert.v1

?unassignedlast reviewed —

Sensitivity

unclassified

Information Class

unclassified

Variants

3 surface forms

plural: X.509 Certificates
possessive: X.509 Certificate's
pluralpossessive: X.509 Certificates'

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